HF5 Humidity Transmitter

For fixed installation in HVAC and industrial applications

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The HF5 humidity transmitter is designed for fixed installation in HVAC and industrial applications. It provides two analog output signals or a digital output signal corresponding to relative humidity, temperature, dew point or another psychrometric parameter. The HF5 uses a plug-in HygroClip 2 probe with the specific model being determined by the application. The measuring range is 0 to 100 %RH and -100 to 200°C (-148 to 392°F). The range will depending on the probe model selected. All HygroClip 2 probes feature durable sensors, consistent performance and can be used interchangeably to facilitate routine calibrations. The HF5 transmitter is available in different configurations and has extensive settings and functions that can be configured and enabled with the ROTRONIC HW4 software after connecting the HF5 to a PC.


  • Relative humidity and temperature measurement
  • Dew Point and other psychrometric calculations
  • Interchangeable probe for easy maintenance
  • Wide choice of probes to satisfy every application
  • Low voltage and AC power versions
  • Scalable analog signals
  • Various digital outputs available
  • Available with metal or plastic housing
Dimensions HF52, HF53, HF54, HF55: 129 x 72 x 45 mm 
HF56: 192 x 102 x 52 mm
Weight 220 g / 500 g
Operating range electronics HF520: -25…60 °C / 0…100 %rh / HF53/54/55/56: -40…60 °c / 0…100 %rh / HF5X with screen -10…60 °C
Accuracy at 23 ±5 °C Probe dependent
Power supply / Power consumption HF52: 10...28 VDC / 2 x <20 mA
HF53, HF54: 15…40 VDC or 12…28 VAC / <420 mA 
HF56: 58...240 VAC / <45 mA 
HF55: Power over Ethernet
Psychrometric calculations All psychrometric values
Number of probe inputs 1
Initialization time Typically <3 sec
Display type Optional graphics display. Presentation configurable.
Backlit Display Yes
Alerting Sensor break or short circuit, programmable.
Alarm indicators Yes
Exploitation software ROTRONIC HW4.2
Probe adjustment by software Yes, with service cable
Probe adjustment by keypad display / keyboard
Firmware update With internet and HW4 software
Data processing via HW4 Graphics, statistics, analysis, qualification, etc.
Circuit type 2 -Wire or 3/4-Wire
Analogue outputs scaleable by the user Yes
Analog output signal (standard) 2 x 0…1 V, 0…5 V, 0…10 V, 0(4)…20 mA
Automatic load compensation Yes
Communication interfaces RS-458 / USB / LAN / WLAN / PoE (Modus B)
Service Interface Mini USB (UART)
Enclosure material ABS
Cable connections M16 cable gland and screw terminals
IP protection rating IP65 (except models with USB / Ethernet interface)
FDA/GAMP compatibility FDA 21 CFR Part 11 and GAMP compatible

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